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package eu.siacs.conversations.xml;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.concurrent.LinkedBlockingQueue;
import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
public class TagWriter {
private OutputStreamWriter outputStream;
private boolean finshed = false;
private LinkedBlockingQueue<AbstractStanza> writeQueue = new LinkedBlockingQueue<AbstractStanza>();
private Thread asyncStanzaWriter = new Thread() {
private boolean shouldStop = false;
@Override
public void run() {
while (!shouldStop) {
if ((finshed) && (writeQueue.size() == 0)) {
return;
}
try {
AbstractStanza output = writeQueue.take();
outputStream.write(output.toString());
outputStream.flush();
} catch (Exception e) {
shouldStop = true;
}
}
}
};
public TagWriter() {
}
public void setOutputStream(OutputStream out) throws IOException {
if (out == null) {
throw new IOException();
}
this.outputStream = new OutputStreamWriter(out);
}
public TagWriter beginDocument() throws IOException {
if (outputStream == null) {
throw new IOException("output stream was null");
}
outputStream.write("<?xml version='1.0'?>");
outputStream.flush();
return this;
}
public TagWriter writeTag(Tag tag) throws IOException {
if (outputStream == null) {
throw new IOException("output stream was null");
}
outputStream.write(tag.toString());
outputStream.flush();
return this;
}
public TagWriter writeElement(Element element) throws IOException {
if (outputStream == null) {
throw new IOException("output stream was null");
}
outputStream.write(element.toString());
outputStream.flush();
return this;
}
public TagWriter writeStanzaAsync(AbstractStanza stanza) {
if (finshed) {
return this;
} else {
if (!asyncStanzaWriter.isAlive()) {
try {
asyncStanzaWriter.start();
} catch (IllegalThreadStateException e) {
// already started
}
}
writeQueue.add(stanza);
return this;
}
}
public void finish() {
this.finshed = true;
}
public boolean finished() {
return (this.writeQueue.size() == 0);
}
public boolean isActive() {
return outputStream != null;
}
public void forceClose() {
finish();
if (outputStream != null) {
try {
outputStream.close();
} catch (IOException e) {
//ignoring
}
}
outputStream = null;
}
}
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